The expansion dock is plug and play, which is convenient to use. It can also serve as power supply source of your laptop, which is multifunctional.The expansion dock features high resolution, bringing you smooth and delicate image quality.Made of plastic and metal, the expansion dock is stainless and hard to use.The length of the expansion dock is 15.2cm, width is 3cm and thickness is 1.1cm.The expansion dock is suitable for being used in computer, projector, TV set and so on.Item Name: Expansion DockMaterial: Plastic, MetalColor: Grey Silver ColorResolution: 4K x 2K (3840 x 2160)(Downward Compatibility: 1080P)Interface: 1 x HDMI-compatible(4K60Hz), 2 x USB3.0, 2 x Type-C, 1 x TF Card Slot, 1 x SD-Card SlotFeatures: Multifunctional, Fast Transmission, LightweightSize Details: 15.2cm x 3cm x 1.1cm/5.98" x 1.18" x 0.43" (Approx.)Notes:Due to the light and the screen setting difference, the item's color may slightly differs from the pictures.Please allow slight dimension difference due to the manual measurement.Package Includes:1 x Expansion Dock